Improved intra prediction for high definition video using localized horizontal spatial prediction

In this paper, a localized horizontal spatial prediction (HSP) based algorithm was proposed for Intra coding of high definition (HD) inputs. In the algorithm, a block of size 32×16 is divided into two 16×16 MBs, consisting of the pixels from the even-numbered columns and the odd-numbered columns (termed the even MB and the odd MB) respectively. The even MB is encoded using conventional Intra coding techniques and then its reconstruction is used for the prediction of the odd MB. Experimental results show that up to 0.79 dB and on average 0.39 dB gain can be achieved for HD sequences with the proposed framework at lower complexity than H.264 Intra coding.